https://p0f.net/index.php?action=history&feed=atom&title=New_Features_in_Java_12_through_15 2026-04-07T01:58:12Z Revision history for this page on the wiki MediaWiki 1.30.0 https://p0f.net/index.php?title=New_Features_in_Java_12_through_15&diff=30&oldid=prev 2021-01-18T12:04:35Z

<p>‎<span dir="auto"><span class="autocomment">What I assume: </span> change reqs</span></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr style="vertical-align: top;" lang="en"> <td colspan="2" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 12:04, 18 January 2021</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l9" >Line 9:</td> <td colspan="2" class="diff-lineno">Line 9:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* fluent in the Java language (according to v11 language specification)</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* fluent in the Java language (according to v11 language specification)</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* aware of how Java garbage collectors work and why we need them</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* aware of how Java garbage collectors work and why we need them</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del class="diffchange diffchange-inline">familiar with </del>what software <del class="diffchange diffchange-inline">profiling and auditing </del>are and <del class="diffchange diffchange-inline">how </del>they <del class="diffchange diffchange-inline">work</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins class="diffchange diffchange-inline">have a clue about </ins>what <ins class="diffchange diffchange-inline">Linux </ins>software <ins class="diffchange diffchange-inline">packages </ins>are and <ins class="diffchange diffchange-inline">what </ins>they <ins class="diffchange diffchange-inline">do</ins></div></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">* have a clue about Linux scripting</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>= Language =</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>= Language =</div></td></tr> </table>

Gregab https://p0f.net/index.php?title=New_Features_in_Java_12_through_15&diff=29&oldid=prev 2021-01-18T11:25:34Z

<p>Typo.</p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr style="vertical-align: top;" lang="en"> <td colspan="2" style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 11:25, 18 January 2021</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>= Introduction =</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>= Introduction =</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>JDK versions just keep coming, and since my last article about [[Changes in Java 10 and 11|new features in Java v10 and v11]], there have been <del class="diffchange diffchange-inline">three </del>new major Java releases with a number of interesting (and useful) new features.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>JDK versions just keep coming, and since my last article about [[Changes in Java 10 and 11|new features in Java v10 and v11]], there have been <ins class="diffchange diffchange-inline">four </ins>new major Java releases with a number of interesting (and useful) new features.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>= What I assume =</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>= What I assume =</div></td></tr> </table>

Gregab https://p0f.net/index.php?title=New_Features_in_Java_12_through_15&diff=28&oldid=prev 2021-01-18T11:25:00Z

<p>Placeholders with links and metadata.</p> <p><b>New page</b></p><div>= Introduction =<br /> <br /> JDK versions just keep coming, and since my last article about [[Changes in Java 10 and 11|new features in Java v10 and v11]], there have been three new major Java releases with a number of interesting (and useful) new features.<br /> <br /> = What I assume =<br /> <br /> I assume that you are:<br /> <br /> * fluent in the Java language (according to v11 language specification)<br /> * aware of how Java garbage collectors work and why we need them<br /> * familiar with what software profiling and auditing are and how they work<br /> * have a clue about Linux scripting<br /> <br /> = Language =<br /> <br /> == Switch Expressions (v12) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/325<br /> <br /> Lifecycle phases:<br /> <br /> * v12: preview<br /> * v13: preview<br /> * v14: standard<br /> <br /> == Text Blocks (v13) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/355<br /> <br /> Lifecycle phases:<br /> <br /> * v13: preview<br /> * v14: second preview<br /> * v15: standard<br /> <br /> == Pattern Matching for instanceof (v14) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/305<br /> <br /> Lifecycle phases:<br /> <br /> * v14: preview<br /> * v15: second preview<br /> <br /> == Records (v14) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/359<br /> <br /> Lifecycle phases:<br /> <br /> * v14: preview<br /> * v15: second preview<br /> <br /> == Sealed Classes (v15) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/360<br /> <br /> Lifecycle phases:<br /> <br /> * v15: preview<br /> <br /> = Virtual Machine =<br /> <br /> == Shenandoah Garbage Collector (v12) ==<br /> <br /> Lifecycle phases:<br /> <br /> * v12: experimental<br /> * v15: GA<br /> <br /> == Abortable Mixed Collections for G1 (v12) ==<br /> <br /> https://openjdk.java.net/jeps/344<br /> <br /> Make G1 mixed collections abortable if they might exceed the pause target.<br /> <br /> == Promptly Return Unused Committed Memory from G1 (v12) ==<br /> <br /> https://openjdk.java.net/jeps/346<br /> <br /> G1 only returns memory from the Java heap at either a full GC or during a concurrent cycle. Since G1 tries hard to completely avoid full GCs, and only triggers a concurrent cycle based on Java heap occupancy and allocation activity, it will not return Java heap memory in many cases unless forced to do so externally.<br /> <br /> This feature enhances the G1 garbage collector to automatically return Java heap memory to the operating system when idle.<br /> <br /> == Return Unused Memory to OS from ZGC (v13) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/351<br /> <br /> == Bye-bye, CMS (v14) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/363<br /> <br /> == Hidden Classes (v15) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/371<br /> <br /> = Tools =<br /> <br /> == New OS-Native Packaging Tool for Self-Contained Apps (v14) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/343<br /> <br /> Lifecycle phases:<br /> <br /> * v14: incubator<br /> <br /> == Better NullPointerException Messages (v14) ==<br /> <br /> * JEP: https://openjdk.java.net/jeps/358</div>

Gregab